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F. A. RUNDLE.

Homme MECHANISM.

Il f' @PJM APPLCATION FILE!) MAR. i5, HHS.

Pateued Auw.

/ mi l ff" V FRED A. BUNDLE, OF HARVEY. ILLINOIS.

HOISTING MECHANISM.

Specification of Letters Patent.

Patented Ang". 22, 191.6.

Application filed March l5, 1915. Serial No. 14,589.

To all whom it may concern:

Be it. known that l, Fin-1n A. lltl'xnm, a citizen ot the United States, residing at llarvey. in the county ot Cool: and State of Illinois, have invented a certain new and useful Improvement in lloisting Meehanism, of which the following is a sperilieation.

This invent-ion relates to automatic brakes, particularly to brakes tor use on cranes and other hoisting apparatus The object ot' this invention is to provide a brake which. while noiseless. isexceptionally positive. in action.

'Vlie in\ention consists in a device capable of carrying out the foregoing objects. which can be easily and cheaply made and installed, which is satisfactory in operation and not readily liable to get out. ot order.

lt consists more particularly in a means for operating the brake ratchet tlog in which the strain on all of theI parts used in opera ting it is in one common plane, thereby doing away with torsional or bending strains which have frequently been present in priordeviees.

The invention further consists in a novel mounting for certain ot the parts, thereoy greatly simplifying the construction and operation, all as will fully appear in the specification and claims.

Referring to the drawings in which similar numerals indicate the saine parts throughout the several views7 Figure l. is a side view ot a trolley in an ordinary traveling crane, having the devices ol this invention applied` thereto in its preferred form. Fig. i), is a plan View ot certain paits of the device of Fig. l which embody the essential features olf this invention. Fig. 3 is a detail side view ot' the ratchet operating device. Fig. 4 is a vertical sectional detail view through shaft A of Fig. l.

The crane trolley to which the invention is applied is supported by the shafts l() on the Wheels l2 and has any suitable forni ot standard frame, 14 carrying shal'ts` l5, lo, 17 and 1S, the former being the power shaft driven by a suitably located motor, and the latter the load shaft. On this load shaft 1R is the winding drum 20 over whirh opposite ends ot the load carrying rope or chain pass. 'lhe middle of this load carrying member 2Q passes over the suitably mounted adjusting pulley 24 and the. pulley 2G to whose shaft 27 the lifting hook 28 is attached. As is usual in this art. the driving shalt l5 carries a ,'-mall pinion ilo meshing with gear 2li ou shalt lli which shalt in tarn carries pinion lil meshing with gear lh on. shalt ll. which latter shalt carries pinion il) meshing with gar fl on shaft ld. the result being that when shaft '13 is driven by any suitable means. such for instance. as an electriil motor (not shown) engaging with wheel i3 on said shaft l5. the load carrying drum 2l) rotated at consideraljilr reduced speed. I

'lhe problem of this invention to provide a brake des/ice which will` during the operation of raising the load, automatically lock the load in any position at .vhieh the motor may he stopped either aroidentall)` or intentionally, at the same time permitting the motor to be actually operated to lower the load when the operator desires to do so and at the same time arrange this device so that it Works both positivi-ly and noisolessly and occupies little space. lhis result is accomplished by installing between the gears 32 and 40 and the gears 3i and 5S heretofore described, the simple device illustrated in Figs. 8 and fl. i

The shaft 1.7. heretofore referred lo, is provided with a` pinion 40 and an adjacent disk 44 rigidly secured together and to the. shaft by any suitable means so that they rotate positively with the shaft. 'Vlie portion ol shaft lT immediately adjavent to disk il is provided with scrcw threads- --l-lS as llearly appears in Fig. l on which the gear 3S 1s adapted to tra fel longitudinally of the shalt. between narrow limits. Loosely mounted on the shaft 1T is placed a nut or equivalent device il() rigidly seeurable in position by any suitable means and ot such a size and shape that it limits the amount et' trawl ot the gear longitudinally of the shaft lT upon the gear threads 4G. This positive movement, of the gear All under the conditions just mentioned is sutiicient so that in one position the ratchet wheel 50 not bound by the friction plates 54 and 56 and in the other position it is gripped by those plates between the disk -lfl and the gear 3S so that the disk, ratchet wheel and gear rotate in unison.

.lournaled on a shaft Gt. provided 'for the purpose and suitably supported by any suitable means. as tor instance. the outer walls ol. the case,y (il which inclose the entire, trolley gearing mechanism. is the ratchet dog mede mur-.h .more re Y .they-would he were he collar' retuhet dog itnelf (36 allaient-l to Lee-5h 5"* on Selectively meela with the rzoeb Wheel 5l), Pi'vomlly nonne rl n?, fie' to this ratchet dog flo is e, link' 743 in it rn comieced :z- T5.' to e coller rotecehly mounted upon elle lll This coller irs mede in mvo par ri: ehown. pivoted lo.; ilaef' :lll l/ on nie inde of the elmft and, spring i (l im hier on rhe opposite side of the simu enough the f ency of the coiled sprl g T?? on holt 80 pas, ng through the two parte ol' the coller as clearly appears in Fig. 3. desd-Shed are so as Shaft lf' fin a munter clock wise di.: in ol rile eollilelem". lo pull link n; .foire lo A ilnlrziw 'eher teeth 52 after :is belote,

mit lli le? onder the forth. one which roilly than ehn'lft l? rWith frs-,meme of dog .i6 are lliY and sharply than M applied to shaft 17 or some other one rotating er its speed. It will also he rmticed, che collar 74 and the dog and connecting parte all lie in ille esame vertical plane thereby first economi ing ico .ind second doing nwev with die loremoel sreine which, have cxei-`l hereltofonin ineel'anlsrn of ellis class wlnfre ille rntehet @vracing device 1find he are in :femo'fely seperated Milled en: j rin 1r more Y the result @hat tl,

parallel galones.

lr: line oper applied lo .l the hook on oi' the device, power is and load le attached to l .e power .sllal' .is roiered in the dir ndiraed by the arrow thereby rotating mail lo in the direction indicated by its arrow Lllereon, hereby e); once Withdrawing retrhet (log #36 from engagement with l l 5E. This rotation of shaft 16 rhrougl pinion 34, gear 38 and Shaft i7 to rotaie pinion 40 on shaft 17 therebv causing screw threads-i6 on said shaft te trol/'el into the hun lo of gear 38 to ulti! fnelely locky liek eelmah gear and geur "m lyrogelherz r'l,-,.soon es this takes place which it ol-ure oloxnenhulljv", the motion of the motn* i rmmuited to :shell 18 and ille lied le raised. lfhen ille power motor is eropperh the load on the hook Vtends; lo reverrao the direct-ion oli' motion all of ille respective she'fte including Shelli? end fehle.y in the manner heretofm'e describedvv imrnedetelv enlise? the dog lo im lle thrown into engagement with ratchet teeth 50, hereby positively locking the load at the point where the motor stopped. When it is desired to lower the loud, power is applied io #he shaft l5 :indV is rotated in the direc-` non opposite to the `arrovv thereon. This movement; or' the Shaft 15 causes; thecrew threads 4G to move out of the hub 48 of gear 3S thereby releasing the clutch produced by lhe friction dipkn o4-56 on ratchet wheel 5U and therefore lie weight of the load on zo mi?, in the ordinary manner, rotate the' gearing o'wliieh il: is attached until this durch is again locked, `ill-other Words, unt-il zlnf .lend hee caught up with the, movement nl' the motor. v Y

'The eonstrnoton shown in Fig. l of mounting the gen1.' 38 and screw threads out direrlnly upon the shaft has the distinct advantage of simplifying the originel construulon in reducing the number of parts required and 'the amount of probable repaire.

Hoving thus described m wlml I claim es new by Letters Patent, is:

y invention,

and desire to secure 1. A clutch device comprising a, shaft havf ing n, stationary flange thereon, a member loose on the shaft to be clamped to the flange and e. wheel having v' direclly upon the shaft movable of engagement; with Said last mentioned. member for the purposes set forth.

2. A clutch device comprising e shaft having e stationary flange thereon, emember loose on the shalt to be clamped to 'the Hangs, o wheel having its hub screw threaded direclly upon the shaft; to move into andout of engagement with said last lmentioned me her, :means for moving Said Wheel and menne limiting the amount of movement on Seid Shah away from said flange for the purposes sets forth.

8. In e device of the class described, the combination of two parallel shafts, gearing uniting said shafts, a ratchet wheel on one of said shafts, a ratchet dog pivoted nde pendently of both of seid shafts engageable with said ratchet Wheel to stop it and its shaft, :i collar rotatably but frictionally engagging the second shaft and a connection het-Ween said collar and the ratchet dog, the wheel, collar and connecting parts mentioned being in substantially the same plane transverse to the shafts for the purposes ser forth,

fl. ln a device of the class described, the combination of two parallel shafts, intermeshing gears of different sizes on the two shafts, :L ratchet wheel on one of said shafts, i ratchet dog pivoted at a point outsidethe exil: o seid shafts engageable with said et wheel to stop it and eheft, a collar rotenhly but frictowilly :ingnging the sec ond shaft 'md aconnecton between said collar and the ratchet dog, the Wheel, collar and colmectmg parts mentioned bemg 1n Substantially the same plane transverse to the shafts for the purposes set forth.

5. ln a device of the class descrlwd2 the combination of two parallel Shafts, intermeshing gears of lil'erent sizes on the two shafts, '.1 ratchet Wheel on one of said 'shafts carrying the larger of Said gears, e ratchet dog pivote@ at :L peint outside the axis of said Shafts engngeable with seid letchet Wheel to stop if and its shaft, e. collar on the Second shaft rotatablv but rctionally eugagng the eccoml shaft and connection between Saitl collar and the ratchet dog, the wheel', collar and connecting parts mentoned being in substantially the same plane transverse to the shafts for the purposes eet forth.

In a device of the class described, the comhmltion of two parallel shafts, a paix' o intermeshing gears lying in the same piane and mounted respectively upon Said two shafts.v :mother pair of nondntermesb ing gears also mounted upon said shafts but lying n another plane `parallel 'to 'and slightly remote fromV the plane of the. first mentioned gears, a ratchet wheel on one of said shafts lying in the space' between the two planes of the gears, means for detachably connecting said ratchet wheel to the shafton which it is located, a ratchet dogy pivoted at a. point outside the axis of said shafts suitably mounted to detachably engage and stop said ratchet wheel and means connected to said ratchet dog rotatably but frctionally engaging the shaft opposteto the one ou which the ratchet Wheel is mounted, these last mentioned parts lying in the same plane as the ratchet wheel and between Said respective planes of the gears for the purposes set forth.

In witness whereof, I have hereunto sul) ecribed my 11eme in the presence of two witmesses.

FRED A. RU'NDLE. Witnessesz G. R. Bizrqmx, DWIGHT l5. Clmxsme. 

